NICE Itaipu Hydropower Station Once the largest hydropower station in the world, it is now the most in China's Three Gorges. The Itaipu hydropower station is jointly owned and operated by Brazil and Paraguay. It is also a tourist attraction in Iguazu and can be booked online. Three countries junction Recommended on the Brazilian side of the boundary pillar, the best scenery ~ Tickets: 22 local currency Argentina side of the visit is free, Paraguay is not open to the outside world